Can I cancel or modify a bicycle booking after confirmation if my plans change unexpectedly? I want to understand whether rental providers allow cancellations or rescheduling once the booking is confirmed. Are there any charges or penalties depending on how close the cancellation is to the pickup time? Do policies differ between providers, such as partial refunds, rescheduling options, or no-refund cases? It would be helpful to know the typical rules and flexibility offered to avoid losing money or facing issues later.